• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of soil moisture model of extremely thin ground surface which is an indicator and influence for occurrence of wind erosion

Research Project

Project/Area Number 18K05877
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41030:Rural environmental engineering and planning-related
Research InstitutionShinshu University

Principal Investigator

SUZUKI JUN  信州大学, 学術研究院農学系, 准教授 (40262696)

Co-Investigator(Kenkyū-buntansha) 岩田 拓記  信州大学, 学術研究院理学系, 准教授 (10466659)
木村 玲二  鳥取大学, 乾燥地研究センター, 准教授 (80315457)
松岡 延浩  千葉大学, 大学院園芸学研究科, 教授 (80212215)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords砂塵 / 土粒 / 密度 / 限界摩擦速度 / 空隙率 / 土の粒の密度 / 風食 / 表層土壌水分 / 水収支
Outline of Final Research Achievements

By "Development of soil moisture model of extremely thin ground surface which is an indicator and influence for occurrence of wind erosion“, the change of soil moisture of soil grains (hereinafter called soil grains: SG) of size in 0.1 to 3.5 mm which is the source of dust present on the ground surface was determined. This study established a method for determining SG density, and it was clarified that the density of SGs in the dry condition (air dry) of samples in various parts of eastern Japan was about 1.10 to 1.35 g/cm^3 and increased to about 1.63 to 1.74 g/cm^3 immediately after rainfall. In nature, weather conditions such as rainfall, humidity and radiations revealed variations in SG density at any time. These changes in SG density create SG weight lighter depend on SG density vary 1.10 to 1.35 g/cm^3 in dry and 1.63 to 1.74 g/cm^3 in wet condition.

Academic Significance and Societal Importance of the Research Achievements

東日本各地で冬から春にかけて発生する砂塵は、風の力によって地表から離脱した土の粒である。この現象は風食と呼ばれている。世界的にみると風食による土砂移動量は水食によるそれを上回るといわれている。砂塵は乾いた微細な粒であるが、その内部に空隙を有する包含密度envelope densityは、特殊な液体や水銀などを用いた方法によってしか特定されなかったため、発生メカニズムの検討や発生予測の精度に限界があった。
本研究課題によって、微細な土粒の大きさごとの密度を乾燥、空気乾燥ならびに飽和の各状態に対して特定することが可能になった。これによって広く発生している砂塵の発生に対する技術開発が可能になる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Determination by MODIS satellite-based methods of recent global trends in land surface aridity and degradation2019

    • Author(s)
      Reiji KIMURA and Masao MORIYAMA
    • Journal Title

      Journal of Agricultural Meteorology

      Volume: 75 Issue: 3 Pages: 153-159

    • DOI

      10.2480/agrmet.D-19-00003

    • NAID

      130007677040

    • ISSN
      0021-8588, 1881-0136
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 農地保全を目的とした風食の発生メカニズムの解明2021

    • Author(s)
      鈴木純
    • Organizer
      2021年度農業農村工学会大会講演会「農地保全の最前線」講演要旨
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 東日本の畑地から発生する砂塵の素因2021

    • Author(s)
      鈴木純、酒井優、小野裕
    • Organizer
      2021年度農業農村工学会大会講演会講演要旨
    • Related Report
      2020 Annual Research Report
  • [Presentation] Determination of soil aggregate density2020

    • Author(s)
      Jun SUZUKI and Nobuhiro MATSUOKA
    • Organizer
      Proceedings of Agricultural Meteorology 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 砂塵発生の指標となる摩擦速度と土の粒の密度2020

    • Author(s)
      鈴木 純・細田風音
    • Organizer
      農業農村工学会2020年度大会講演会要旨
    • Related Report
      2019 Research-status Report
  • [Presentation] 畑地から発生する砂塵のもとになる微細な土の粒の密度2019

    • Author(s)
      鈴木 純・横山空生
    • Organizer
      2019年度農業農村工学会大会講演会要旨集
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi